//
// (C) Copyright 2009 Irantha Suwandarathna (irantha@gmail.com)
// All rights reserved.
//

/* Copyright (c) 2001-2008, The HSQL Development Group
 * All rights reserved.
 *
 * Redistribution and use _in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this
 * list of conditions and the following disclaimer.
 *
 * Redistributions _in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer _in the documentation
 * and/or other materials provided with the distribution.
 *
 * Neither the name of the HSQL Development Group nor the names of its
 * contributors may be used to endorse or promote products derived from this
 * software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


using System;
using EffiProzDB.Lib;


namespace EffiProzDB.RowIO
{
    /**
     * This class quotes strings only if they contain the quote character or
     * the separator for the field. The quote character is doubled.
     *
     * @author sqlbob@users (RMP)
     * @version 1.8.0
     * @since 1.7.0
     */
    public class RowOutputTextQuoted : RowOutputText
    {

        public RowOutputTextQuoted(string fieldSep, string varSep,
                                   string longvarSep, bool allQuoted,
                                   string encoding): base(fieldSep, varSep, longvarSep, allQuoted, encoding)
        {
           
        }

        protected override string checkConvertString(string s, string sep)
        {

            if (allQuoted || s.Length == 0 || s.IndexOf('\"') != -1
                    || (sep.Length > 0 && s.IndexOf(sep) != -1)
                    || hasUnprintable(s))
            {
                s = StringConverter.toQuotedString(s, '\"', true);
            }

            return s;
        }

        private bool hasUnprintable(string s) {

        for (int i = 0, len = s.Length ; i < len; i++) {
            if (Char.IsControl(s[i])) {
                return true;
            }
        }

        return false;
    }
    }
}
